Analysis of interatomic Contacts of Structural Units in PDB entry:
1TWC

Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
This page provides analyses of contacts formed by:

chains
helices
sheets
residues

For analysis of ligand-protein contacts, use:

LPC software

3D structure can be seen in additional window with STING software for 1TWC entry

There are 10 chains in PDB entry 1TWC (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLY 3	LEU 1450
B	PHE 18	PHE 1224
C	GLU 3	ASP 268
E	MET 1	MET 215
F	LYS 72	ASP 154
H	SER 2	ARG 146
I	MET 1	PHE 121
J	MET 1	ASN 64
K	MET 1	LEU 114
L	ALA 25	ARG 70

There are127 helices in PDB entry 1TWC. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	23	30	Right-handed alpha
Helix 2	2	A	95	104	Right-handed alpha
Helix 3	3	A	120	128	Right-handed alpha
Helix 4	4	A	130	143	Right-handed alpha
Helix 5	5	A	203	213	Right-handed alpha
Helix 6	6	A	215	221	Right-handed alpha
Helix 7	7	A	230	233	Right-handed 310
Helix 8	8	A	262	281	Right-handed alpha
Helix 9	9	A	285	305	Right-handed alpha
Helix 10	10	A	324	326	Right-handed alpha
Helix 11	11	A	368	372	Right-handed alpha
Helix 12	12	A	384	395	Right-handed alpha
Helix 13	13	A	451	453	Right-handed 310
Helix 14	14	A	474	479	Right-handed alpha
Helix 15	15	A	494	505	Right-handed alpha
Helix 16	16	A	506	510	Right-handed 310
Helix 17	17	A	524	536	Right-handed alpha
Helix 18	18	A	542	553	Right-handed alpha
Helix 19	19	A	574	579	Right-handed alpha
Helix 20	20	A	618	623	Right-handed alpha
Helix 21	21	A	628	638	Right-handed alpha
Helix 22	22	A	638	659	Right-handed alpha
Helix 23	23	A	665	670	Right-handed 310
Helix 24	24	A	672	699	Right-handed alpha
Helix 25	25	A	709	736	Right-handed alpha
Helix 26	26	A	741	750	Right-handed alpha
Helix 27	27	A	754	763	Right-handed alpha
Helix 28	28	A	809	846	Right-handed alpha
Helix 29	29	A	867	871	Right-handed 310
Helix 30	30	A	874	876	Right-handed 310
Helix 31	31	A	884	887	Right-handed 310
Helix 32	32	A	889	898	Right-handed alpha
Helix 33	33	A	913	917	Right-handed 310
Helix 34	34	A	922	947	Right-handed alpha
Helix 35	35	A	959	971	Right-handed alpha
Helix 36	36	A	982	995	Right-handed alpha
Helix 37	37	A	1004	1015	Right-handed alpha
Helix 38	38	A	1015	1026	Right-handed alpha
Helix 39	39	A	1027	1034	Right-handed alpha
Helix 40	40	A	1038	1056	Right-handed alpha
Helix 41	41	A	1063	1077	Right-handed alpha
Helix 42	42	A	1096	1107	Right-handed alpha
Helix 43	43	A	1127	1139	Right-handed alpha
Helix 44	44	A	1143	1146	Right-handed alpha
Helix 45	45	A	1163	1165	Right-handed 310
Helix 46	46	A	1166	1172	Right-handed alpha
Helix 47	47	A	1198	1204	Right-handed alpha
Helix 48	48	A	1208	1221	Right-handed alpha
Helix 49	49	A	1230	1234	Right-handed 310
Helix 50	50	A	1257	1270	Right-handed alpha
Helix 51	51	A	1312	1317	Right-handed alpha
Helix 52	52	A	1331	1340	Right-handed alpha
Helix 53	53	A	1340	1359	Right-handed alpha
Helix 54	54	A	1364	1377	Right-handed alpha
Helix 55	55	A	1405	1416	Right-handed alpha
Helix 56	56	A	1423	1430	Right-handed alpha
Helix 57	57	A	1436	1440	Right-handed 310
Helix 58	58	B	26	28	Right-handed 310
Helix 59	59	B	29	42	Right-handed alpha
Helix 60	60	B	44	57	Right-handed alpha
Helix 61	61	B	57	65	Right-handed alpha
Helix 62	62	B	113	120	Right-handed alpha
Helix 63	63	B	185	192	Right-handed alpha
Helix 64	64	B	282	289	Right-handed alpha
Helix 65	65	B	293	302	Right-handed alpha
Helix 66	66	B	307	322	Right-handed alpha
Helix 67	67	B	326	336	Right-handed alpha
Helix 68	68	B	344	359	Right-handed alpha
Helix 69	69	B	371	390	Right-handed alpha
Helix 70	70	B	400	402	Right-handed 310
Helix 71	71	B	408	425	Right-handed alpha
Helix 72	72	B	450	464	Right-handed alpha
Helix 73	73	B	487	495	Right-handed alpha
Helix 74	74	B	515	519	Right-handed 310
Helix 75	75	B	551	561	Right-handed alpha
Helix 76	76	B	567	569	Right-handed 310
Helix 77	77	B	570	574	Right-handed 310
Helix 78	78	B	592	606	Right-handed alpha
Helix 79	79	B	654	667	Right-handed alpha
Helix 80	80	B	680	687	Right-handed alpha
Helix 81	81	B	695	699	Right-handed alpha
Helix 82	82	B	706	710	Right-handed 310
Helix 83	83	B	744	749	Right-handed 310
Helix 84	84	B	752	756	Right-handed 310
Helix 85	85	B	758	762	Right-handed 310
Helix 86	86	B	763	774	Right-handed alpha
Helix 87	87	B	775	777	Right-handed 310
Helix 88	88	B	784	788	Right-handed 310
Helix 89	89	B	808	813	Right-handed alpha
Helix 90	90	B	843	848	Right-handed alpha
Helix 91	91	B	1013	1017	Right-handed 310
Helix 92	92	B	1022	1039	Right-handed alpha
Helix 93	93	B	1051	1062	Right-handed alpha
Helix 94	94	B	1098	1103	Right-handed alpha
Helix 95	95	B	1131	1142	Right-handed alpha
Helix 96	96	B	1143	1152	Right-handed alpha
Helix 97	97	B	1198	1210	Right-handed alpha
Helix 98	98	C	26	40	Right-handed alpha
Helix 99	99	C	59	70	Right-handed alpha
Helix 100	100	C	76	80	Right-handed 310
Helix 101	101	C	116	118	Right-handed 310
Helix 102	102	C	167	171	Right-handed 310
Helix 103	103	C	196	201	Right-handed alpha
Helix 104	104	C	204	208	Right-handed 310
Helix 105	105	C	239	264	Right-handed alpha
Helix 106	106	E	5	27	Right-handed alpha
Helix 107	107	E	31	36	Right-handed alpha
Helix 108	108	E	38	46	Right-handed alpha
Helix 109	109	E	54	59	Right-handed alpha
Helix 110	110	E	65	72	Right-handed alpha
Helix 111	111	E	89	103	Right-handed alpha
Helix 112	112	E	120	124	Right-handed 310
Helix 113	113	E	137	142	Right-handed alpha
Helix 114	114	E	143	147	Right-handed 310
Helix 115	115	E	157	168	Right-handed alpha
Helix 116	116	E	171	175	Right-handed 310
Helix 117	117	E	182	188	Right-handed alpha
Helix 118	118	F	86	103	Right-handed alpha
Helix 119	119	F	116	127	Right-handed alpha
Helix 120	120	I	61	65	Right-handed 310
Helix 121	121	J	17	27	Right-handed alpha
Helix 122	122	J	31	39	Right-handed alpha
Helix 123	123	J	43	53	Right-handed alpha
Helix 124	124	J	56	61	Right-handed alpha
Helix 125	125	K	5	10	Right-handed 310
Helix 126	126	K	39	51	Right-handed alpha
Helix 127	127	K	82	109	Right-handed alpha

There are 43 sheets in PDB entry 1TWC. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ,

There are 3 strands in A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1418	1419	first strand
Strand 2	A	16	18	anti-parallel
Strand 3	B	1215	1217	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	85	91	first strand
Strand 2	A	235	238	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in C sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	153	first strand
Strand 2	A	161	163	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in D sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	173	177	first strand
Strand 2	A	180	185	anti-parallel
Strand 3	A	198	202	anti-parallel

Back to list of sheets
Back to top of page

There are 7 strands in E sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	348	355	first strand
Strand 2	A	468	470	parallel
Strand 3	A	363	367	anti-parallel
Strand 4	A	455	463	parallel
Strand 5	A	441	445	anti-parallel
Strand 6	A	486	490	anti-parallel
Strand 7	A	348	355	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in F sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	375	379	first strand
Strand 2	A	431	435	anti-parallel
Strand 3	A	402	406	anti-parallel
Strand 4	A	412	414	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in G sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	512	513	first strand
Strand 2	A	518	519	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	540	541	first strand
Strand 2	A	572	573	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	588	590	first strand
Strand 2	A	605	608	anti-parallel
Strand 3	A	611	614	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in J sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	766	767	first strand
Strand 2	A	799	800	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	849	850	first strand
Strand 2	A	856	857	anti-parallel
Strand 3	A	863	865	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in L sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	878	882	first strand
Strand 2	A	953	957	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in M sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1282	1287	first strand
Strand 2	A	1303	1308	anti-parallel
Strand 3	A	1116	1119	anti-parallel
Strand 4	A	1328	1329	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in N sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1141	1142	first strand
Strand 2	A	1272	1274	anti-parallel

Back to list of sheets
Back to top of page

There are 5 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1225	1228	first strand
Strand 2	A	1236	1241	anti-parallel
Strand 3	A	1191	1197	anti-parallel
Strand 4	A	1147	1154	anti-parallel
Strand 5	I	42	47	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in P sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1290	1292	first strand
Strand 2	A	1298	1300	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1442	1445	first strand
Strand 2	F	132	137	anti-parallel
Strand 3	F	143	147	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in R sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	110	111	first strand
Strand 2	B	96	102	anti-parallel
Strand 3	B	125	129	anti-parallel
Strand 4	B	166	171	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	203	205	first strand
Strand 2	B	208	212	anti-parallel
Strand 3	B	480	482	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	404	407	first strand
Strand 2	B	214	218	anti-parallel
Strand 3	B	497	499	parallel
Strand 4	B	536	538	anti-parallel

Back to list of sheets
Back to top of page

There are 5 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	224	227	first strand
Strand 2	B	234	241	anti-parallel
Strand 3	B	253	259	anti-parallel
Strand 4	B	269	272	anti-parallel
Strand 5	B	280	281	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	544	545	first strand
Strand 2	B	633	641	anti-parallel
Strand 3	B	690	694	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	650	651	first strand
Strand 2	B	633	641	anti-parallel
Strand 3	B	740	741	anti-parallel
Strand 4	B	703	704	parallel

Back to list of sheets
Back to top of page

There are 5 strands in X sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	564	565	first strand
Strand 2	B	585	590	anti-parallel
Strand 3	B	578	582	anti-parallel
Strand 4	B	623	627	parallel
Strand 5	B	614	618	anti-parallel

Back to list of sheets
Back to top of page

There are 5 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	792	796	first strand
Strand 2	B	853	861	anti-parallel
Strand 3	B	962	972	anti-parallel
Strand 4	B	947	956	anti-parallel
Strand 5	B	904	905	anti-parallel

Back to list of sheets
Back to top of page

There are 5 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	792	796	first strand
Strand 2	B	853	861	anti-parallel
Strand 3	B	962	972	anti-parallel
Strand 4	B	947	956	anti-parallel
Strand 5	L	55	57	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	804	805	first strand
Strand 2	B	1042	1043	parallel

Back to list of sheets
Back to top of page

There are 8 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1069	1070	first strand
Strand 2	B	1085	1094	anti-parallel
Strand 3	B	979	981	anti-parallel
Strand 4	B	987	994	anti-parallel
Strand 5	B	838	842	parallel
Strand 6	B	1010	1012	anti-parallel
Strand 7	B	821	827	parallel
Strand 8	B	1085	1094	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	910	912	first strand
Strand 2	B	939	940	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in AD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1001	1002	first strand
Strand 2	B	1072	1073	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in AE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1157	1163	first strand
Strand 2	B	1191	1197	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1172	1174	first strand
Strand 2	B	1179	1181	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	12	13	first strand
Strand 2	C	17	19	anti-parallel
Strand 3	C	231	234	anti-parallel
Strand 4	C	173	177	anti-parallel

Back to list of sheets
Back to top of page

There are 5 strands in AH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	119	120	first strand
Strand 2	C	98	104	anti-parallel
Strand 3	C	152	162	anti-parallel
Strand 4	C	43	54	anti-parallel
Strand 5	L	66	67	anti-parallel

Back to list of sheets
Back to top of page

There are 2 strands in AI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	111	114	first strand
Strand 2	C	143	147	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	60	62	first strand
Strand 2	E	78	82	anti-parallel
Strand 3	E	107	112	parallel
Strand 4	E	131	136	parallel

Back to list of sheets
Back to top of page

There are 2 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	87	88	first strand
Strand 2	E	115	116	parallel

Back to list of sheets
Back to top of page

There are 4 strands in AL sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	152	155	first strand
Strand 2	E	195	202	anti-parallel
Strand 3	E	206	214	anti-parallel
Strand 4	E	177	178	parallel

Back to list of sheets
Back to top of page

There are 8 strands in AM sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	95	99	first strand
Strand 2	H	140	145	anti-parallel
Strand 3	H	54	60	anti-parallel
Strand 4	H	8	16	anti-parallel
Strand 5	H	23	30	anti-parallel
Strand 6	H	37	43	anti-parallel
Strand 7	H	121	126	anti-parallel
Strand 8	H	113	114	anti-parallel

Back to list of sheets
Back to top of page

There are 8 strands in AN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	95	99	first strand
Strand 2	H	140	145	anti-parallel
Strand 3	H	54	60	anti-parallel
Strand 4	H	8	16	anti-parallel
Strand 5	H	23	30	anti-parallel
Strand 6	H	37	43	anti-parallel
Strand 7	H	121	126	anti-parallel
Strand 8	H	117	118	anti-parallel

Back to list of sheets
Back to top of page

There are 3 strands in AO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	14	19	first strand
Strand 2	I	24	29	anti-parallel
Strand 3	I	35	37	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in AP sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	70	71	first strand
Strand 2	I	83	87	anti-parallel
Strand 3	I	99	103	anti-parallel
Strand 4	I	109	111	anti-parallel

Back to list of sheets
Back to top of page

There are 4 strands in AQ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	19	23	first strand
Strand 2	K	30	36	anti-parallel
Strand 3	K	70	77	anti-parallel
Strand 4	K	56	62	anti-parallel

Back to list of sheets
Back to top of page

Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il

Analysis of interatomic Contacts of Structural Units in PDB entry: 1TWC

Analysis of interatomic Contacts of Structural Units in PDB entry:
1TWC